We are a consultancy business that manage major projects worldwide. On any project we might have up to 10 key contacts that we deal with. 

When I add a contact to the CRM, i have added a lookup field that links with the projects module. However, this only allows me to add a contact to one project? We may have a key contact who works with us on various different projects and I need the system to show this information.

Is there any way of doing this?